Sally is buying paper clips and staples for the office. a box of paper clips costs (x) $2, and a box of staples (y) costs $4. she is using only the petty cash account's balance of $28 to make the purchase. which inequality models this situation?
a) 2x + 4y ≤ 28
b) 4x + 2y ≤ 28
c) 4x + 2y < 28
d) 2x + 4y > 28

A

Step-by-step explanation:

x is the number of boxes of paper clips

y is the number of boxes of staples

$2 per box of paper clips

$4 per box of staples

2x + 4y is = to or < 28

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°